The biggest problem that I had when I gave up coke was the caffene/withdrwal headaches - I couldn't make it through a week, so i switched to diet A&W Cream Soda (I HATED Diet Coke). I eventually weaned myself off the soda, and can now have a diet drink as a treat.
I did have a sip of regular coke the other day when we were out to dinner, and it was NASTY! It was way too sweet - I can't believe I used to drink 4 2L of the stuff a week!
